Copper 180 square bar refers to a square bar product made from copper alloy 180, which is a high conductivity copper alloy with small amounts of chromium added for increased strength and conductivity. The square shape is commonly used in electrical applications, heat transfer components, and structural parts where corrosion resistance and excellent electrical conductivity are required. Copper 180 may also contain trace amounts of iron. These bars can have widths around 180mm and weigh over 250kg per meter for larger sizes.